Rewrite as module using modern ESNext or Typescript

[GerkinDev]

Xonomy is a good library, but still written using an old-fashioned single file pattern. This is a really big concern, in terms of:

• readability
• maintainability
• testability
• and even, with modern build tools like rollup.js or Parcel, backward compatibility & file size.

This is why a complete rewrite of Xonomy is, IMHO, a priority.

This rewrite could be done either in ESNext or in Typescript. The mail exchange I had with @michmech , the repo owner, was in favor of a Typescript transscripting.

The lib's design would be reworked to convert each Xonomy instance as a class instance, sharing a strict minimal configuration with others, to address issues like #35, thus allowing multiple Xonomy instance per page.

I'll work on a PR ASAP.

[captain-igloo]

Any progress on this @GerkinDev ?